Philbrick solid state operational amplifiers - Philbrick Researches 1966:

l .Vhilbrick

Solid State

PHILBRICK produces a wide variety of
cool, reliable, solid state operational ampli¬
fiers to meet the gamut of application
requirements in measurement, computing,
control, data processing, and testing.

The units shown in this chart are the most
popular types now in production. In
addition to these, Philbrick is developing
new and improved types to meet the
ever-increasing challenges to operational
amplifier performance. Besides basic

amplifiers, one can obtain voltage and cur¬
rent boosters, regulated dc power
supplies, non-linear transconductors and op¬
erational manifolds from Philbrick. You
are invited to discuss the application of
operational amplifiers to the solution
of your problems with Philbrick or our near¬
est Representative.

BULLETIN 6111
December 1966

PHILBRICK <j> RESEARCHES

UTILITY-GRADE

Philbrick Utility-Grade Amplifiers, identified by the
letter “U” following the family number (e.g.PP85AU), are
identical to premium-grade prototypes in circuitry, layout,
manufacturing techniques, and the exclusive use of silicon
transistors and first-grade passive components from leading
U. S. manufacturers.

The substantial price difference between premium and
utility-grade amplifiers is achieved by the following means:

The use of silicon transistors encapsulated in highly
moisture-resistant silicone plastic (Note: not epoxy!)
instead of hermetically-sealed amplifiers.

Use of capacitors which are guaranteed from —55 to
+ 85°C, instead of the —65 to +125°C units normally
used in Premium-Grade products.

All room-temperature tests are carried out with the
thoroughness that has earned Philbrick an enviable
reputation for reliability; complete temperature tests
are run on representative samples of each production
run to confirm compliance with published specifications.

Use of date codes and go-no-go tests instead of serial
numbers and recording of data as normally required for
all premium units (Government Inspection and/or cer¬
tified test results are available, upon request, for
premium units.)

In performance, the Utility-Grade amplifiers (except
those in the P2 Series) are identical to their Premium-Grade
counterparts. As temperature tests are conducted on samples
only, tolerances outside the 10°-60°C range are relaxed as
compared with the corresponding specifications for the
premium amplifier.

Philbrick Utility-Grade amplifiers may be substituted
in virtually all applications for which their Premium-Grade
counterparts are and have been originally recommended.

CURRENT COMPENSATION

Philbrick differential operational amplifier families P35
through P85 contain input stages with matched pairs of
junction transistors in a common emitter configuration.
Emitter current being kept constant, each transistor requires
a “housekeeping” current into its base amounting to emitter
current divided by p (current gain). By selecting high-/? tran¬
sistors and low emitter currents, these base currents can be
made as small as 10- 8 amperes, but they can never be elim¬
inated, and they increase as temperature decreases. If the
base currents of input transistors are not supplied by current
sources within the amplifier, an output voltage error will re¬
sult because this offset current produces a voltage drop
across the feed-back impedance (in an inverter) or the signal
source impedance (in a voltage follower).

The simplest form of base current supply is a resistor
from +B to each base. P45A, P55A, P65A and P85A families
have these built in, while the proper resistance values for
external installation are marked on their PP equivalents.
Although these current trim resistors are inexpensive, they
are most effective within narrow temperature limits and
where high common-mode voltages do not occur. After all, p,
and with it base current do change with temperature, and a
resistor is a constant current source only as long as the
voltage across it remains constant!

Philbrick Current Compensated Amplifiers, identified by
the letter C following the family number, have built-in base
current sources which closely track current demand over the
entire operating temperature range.

The P35C and P85C series contain a sophisticated
compensating circuit which leaves the outstanding common
mode voltage rejection ratio, the common mode voltage
range, and the input impedances unaffected. An additional
feature of this compensating circuit is a provision for nulling
either input current completely by applying an adjustable
voltage bias (±5 volts maximum) to a terminal provided for
the purpose. The P45C and P65C series contain a simpler
compensating circuit which provides a fivefold decrease in
offset current over the entire temperature range, but also
reduces the common mode rejection ratio, the common
mode voltage range, and the input impedance.

CHARACTERISTICS

Typical at + 25°C unless otherwise indicated

1. VOLTAGE GAIN (DC open loop)

At +25°C, rated load,.min.

10 kn load,.min.

100 kn load,.min.

At -25°C, rated load,.min.

At +85°C, rated load,.min.

2. RESPONSE (open loop, inverting)

Small signal: Unity gain-bandwidth.min.

Gain at 1.0 MHz

Gain at 10 MHz

Large signal: Full output .min.

Rate limit

3. INPUT VOLTAGE RANGE

Voltage range, both inputs

Voltage range, between inputs ....abs. max.
CMRR, DC.min.

4. INPUT IMPEDANCE

Between inputs

Negative input to common

Positive input to common

5. INPUT VOLTAGE OFFSET

Zero adjustment (external)

Vs Temp. (+ 10°C to +60°C),.max.

Vs Temp. (—25°C to + 85°C),.max.

Vs Time (per day)

Vs Time (Vz hour)

6. INPUT CURRENT OFFSET

25°C .max.

Vs Temp. ( + 10°C to +60°C),.max.

Vs Temp. (-25°C to +85°C).max.

Vs Time (per day)

Vs Time (Vz hour)

7. INPUT NOISE

(a) Flicker (0.016 to 1.6 Hz)

voltage p-p
current p-p

(b) Broadband (1.6 to 160 Hz)

voltage rms
current rms

(c) Broadband (0.16 to 16 kHz)

voltage rms
current rms

8. OUTPUT (— 25°C to +85°C)

Voltage

Current

Load (rated)

9. POWER REQUIREMENTS X

Voltage

Current from positive supply: (Quiescent)

(Full Load)

Current from negative supply: (Quiescent)

(Full Load)

10. TEMPERATURE RANGE (degrees Centigrade)
Operating: Rated

Derated specifications .max.

Storage .max.

PRICE (quantity 1-4) Price of “Alternate Forms”
may be slightly different. Prices may change
without notice.

ALTERNATE FORMS

These units belong in the same family as the
prototype because they have nearly equiva¬
lent circuit configurations. They may differ
significantly from the listed types in electri¬
cal or physical characteristics, or applica¬
tions considerations. Philbrick Researches
welcomes your inquiry regarding these and
other modified forms of standard units.

UTILITY GRADE

Where indicated a utility grade equivalent
denoted by the letter U following the model
designation, is available at reduced price.
Utility grade amplifiers have identical per¬
formance with their premium grade equiva¬
lents in the temperature range 0-60°C.
Storage temperatures below — 55°C and
above + 85°C and certified test data are
not available.

PP12Q

Battery operated

High input impedance
Low offset current

PP18Q

Battery operated
Differential

PP25A

High input impedance
Low offset current

Q25AH

Differential

Wideband

Low offset current

PP35A

Differential

High input impedance

Low voltage offset

PP35C

Differential

Input current compensated
High input impedance

Low offset voltage

PP45

Ultra wideband

Large output current

5,000

5,000

40,000

20,000

100,000

100,000

50,000

20,000

20,000

80,000

35,000

200,000

200,000

200,000

30,000

30,000

150,000

80,000

1,000,000

1,000,000

300,000

2,000

2,000

30,000

15,000

40,000

40,000

20,000

2,000

2,000

60,000

15,000

150,000

150,000

100,000

50 kHz

50 kHz

1.5 MHz

30 MHz ▼

4 MHz

4 MHz

100 MHz

_

2

40

6

6

140

_

_

4

—

14

1 kHz

1 kHz

10 kHz

0.1 MHz

8 kHz

8 kHz

300 kHz

20 V/ms

20 V/ms

0.6 V//i-sec

8 V/ft-sec

0.5 V//j.- sec

0.5 V//n-sec

200 V/ju-sec

±0.2 V

± 0.5 V

±10 V

±10 V

±10 V

±10 V

±10 V

2.7 V

2.7 V

30 V

30 V

5 V

5 V

5 V

1000:1

5000:1

1000:1

5,000:1

20,000:1

20,000:1

1000:1

10"n || 6 pF

0.4 Mn || 6 pF

10''nil 6pF

10"n|| 3 pF

5Mn H 5 pF

5Mn II 5 pF

220 kn || 6 pF

10 12 n ii 6 pF

15 Mo || 6 pF

10' 2 n II6 pF

10 ,2 n|| 6 pF

2(10»)n|l27 pF

2(10 9 )nll 27 pF

33 Mn || 0.01/xF

10 ,2 n || 6 pF

15 Mo II 6 pF

10' 2 n || 6 pF

10’ 2 n II6 pF

2(10 9 )nll27 pF

2(10 9 )nll 27 pF

33 Mnil 6 pF

10 kn Rhst.

10 ko Rhst.

5 kn Rhst.

10 kn & 250 kn Pot.

2.5 kn Pot.

2.5 kn Pot.

50 kn Rhst.

3 mV

3 mV

3 mV

3 mV

1 mV

1 mV

2.5 mV

6 mV

6 mV

6 mV

6 mV

3 mV

3 mV

6 mV

50 ,iV

50 M V

50 f,V

50 M V

25 mV

25 /xV

100 ;xV

10 M V

10 M V

10 M V

10 mV

10 ^V

10 /xV

15 /xV

•

-100 pA

-4-50 nA *

-150 pA

-150 pA

+20 nA

±4 nA**

±50 nA*

1 nA

200 nA

1 nA

1 nA

20 nA

4 nA

150 nA

10 nA

440 nA

10 nA

10 nA

45 nA

10 nA

300 nA

3 pA

5 nA

3 pA

3 pA

1 nA

1 nA

30 nA

1 pA

0.5 nA

IpA

1 pA

0.1 nA

0.1 riA

3 nA

5 m V

5 M V

5,xV

5 mV

10 mV

10 ^V

5 ^V

2 pA

0.25 nA

2 pA

2 pA

0.05 nA

0.05 nA

0.5 nA

2,xV

1 M V

2,*V

2 m V

10

10 M V

1 mV

3 pA

30 pA

1 pA

IpA

6 pA

6 pA

600 pA

2 m V

1 fxV

2 /aV

2 /uV

10 M V

10 mV

1 mV

3 pA

30 pA

3 pA

3 pA

6 pA

6 pA

600 pA

-4-1 V

±1 V

-t-ll V

±11 V

±11V

±11 V

±10 V

-4-2 mA

±2mA

-4-2.2 mA

±2.2 mA

±2.2 mA

±2.2 mA

±20 mA

500 n

500 o

5kn

5 kn

5 kn

5 kn.

500 n

± 1.35 V

-4-1.35 V

±15 V

±15 V

±15 V

±15 V

±15 V

0.8 mA

0.4 mA

4.6 mA

6.6 mA

6 mA

6 mA

4 mA

2.8 mA

2.4 mA

4.6 mA

6.6 mA

6 mA

6 mA

23 mA

0.8 mA

0.4 mA

4.6 mA

6.6 mA

6 mA

6 mA

4 mA

2.8 mA

2.4 mA

6.8 mA

8.8 mA

8.2 mA

•

8.2 mA

23 mA

-25 to +85

-25 to +85

-25 to +85

-55 to +125

— 25 to +85

-25 to +85

— 25 to +85

-55 to +100

-55 to +100

— 55 to +100

-55 to +100

-55 to +100

-55 to +100

-62 to +125

— 62 tp +125

-62 to +125

-62 to +150

-62 to +125

-62 to +125

-62 to +125

$145

$85

$135

$180

$98

$118

$118

P12Q ■ $145

P18Q ■ $85

PP25C and P25C ■

P25AH ▼ ■ $154

PP35A1 and P35A1 ■

PP35C1 and P35C1 ■

P45A ■ $118

have input currents ap-

are units selected for

are units selected for

proximately 1/10 of

less than 1 mV input

less than 1 mV input

those given for PP25A

voltage offset ( — 25°C

voltage offset f — 25°C

at any given temper-

to +85°C). $128

to +85°C). $128

ature. $145

P35A ■ $98

P35C ■ $118

\

t

P25A ■ $135

EP12QU A $108

EP18QU a $59

EP25AU A $85

EP35AU a $60

EP45AU A $87

PP12QU $108

i

PP18QU $59

PP25AU $79

PP35AU $54

PP45U $89

SUGGESTED BOOSTER TYPES (used with operational amplifiers for voltage or current boost; connected inside the loop)

P66A .delivers ±10 V at ±100 mA with external "Boost” resistors connected; ±20 mA without.

PP66A .delivers same power output as Model P66A.

P5.delivers ±10 V at ±20 mA; physical companion of P2A.

0SPB -50/50 delivers ±50 V at ±50 mA with external “Boost” resistors connected; ±10 mA without; has DC gain of 7;
requires ±60 V supplies.

0SPB-100/10 delivers ±100 VDC at ±10 mA with external “Boost” resistors connected; ±1.5 mA without; has DC gain of 20;
requires ±120 VDC supplies.

Physical Form
P

PP

P2A

0SP

0SP

Price (quantity 1-4)

$39

$40

$48

$85

$85

FLAT-PROFILE PACKAGE

“FLAT-PROFILE” amplifiers (FP), only 0.4” in height, are available in OEM
quantities to permit 0.5” printed circuit board spacing. Most "PP” amplifiers
described above and some boosted models not available in the "PP” package
may be ordered in the “FP” model.

PP45C

Ultra wideband

Large output current
Input current compensated

PP45L

Large output current

PP55A

Low cost

Premium

grade construction

PP65A

Versatile

PP65C

Versatile

Input current
compensated

PP65AH

Wideband

Versatile

PP75A

High input impedance

PP85A

Differential

Low voltage offset

PP85C

Differential

Low voltage offsel
Input current
compensated

50 000

50,000

20,000

40,000

40,000

40,000

20,000

50,000

50,000

200 000

200,000

40,000

75,000

75,000

75,000

40,000

90,000

90,000

300 000

300,000

60,000

180,000

180,000

180,000

80,000

200,000

200,000

20 000

20,000

10,000

20,000

20,000

20,000

10,000

20,000

20,000

100^000

100,000

30,000

50,000

50,000

50,000

40,000

60,000

60,000

100 MHz

1.5 MHz

1.5 MHz

1.5 MHz

1.5 MHz

20 MHz

1.5 MHz

2 MHz

2 MHz

140

2

3

3

3

25

3

3

3

3

14

300 kHz

10 kHz

20 kHz

20 kHz

20 .kHz

75 kHz

20 kHz

10 kHz

10 kHz

200 V/^-sec

0.6 V/jtt-sec

1.5 V//X-sec

1.5 V//x-sec

1.5 V//x-sec

5 V//x-sec

1.5 V/V-sec

0.6 V//x-sec

0.6 V//x-sec

+5 V

+10 V

+ 10 V

+ 10 V

+ 5 V

+ 10 V

+ 10 V

+ 11 V

+ 11 V

5 V

5 V

5 V

5 V

5 V

5 V

10 V

5 V

5 V

300:1

1000:1

1000:1

1000:1

300:1

1000:1

1000:1

20 , 000:1

20 , 000:1

220 kn|| 6 pF

220 kQ II 6 pF

200kQ II 7pF

300kQ II 6 pF

300kn || 6 pF

300kn || 6 pF

lOMnii 6 pF

330kQll 6 pF

330kQ II 6 pF

15 Mq|| 0.01 m F

33 Mq II1000 pF

15Mn II 400pF

44Mq || 400pF

22Mq ll 400pF

44Mn j| 400pF

500MQII 400pF

500MQII 6 pF

500MQII 6 pF

15 Mall 6 pF

33 Mq || 6 pF

15Mq II 8 pF

44Mq || 6 pF

22 MQII bpF

44Mn || 6 pF

500Mqii 6 pF

500MQII 6 pF

500MQII 6 pF

50 kQ Rhst.

50 kn Rhst.

50 kQ Rhst.

50 kQ Rhst.

50 kn Rhst.

50 kn Rhst.

50 kn Rhst.

50 kQ Rhst.

50 kQ Rhst.

2.5 mV

2.5 mV

2 mV

1.5 mV

1.5 mV

1.5 mV

3 mV

1 mV

1 mV

6 mV

6 mV

6 mV

4 mV

4 mV

4 mV

12 mV

3 mV

3 mV

100

100 M V

100 juV

50 ,xV

50 ,xV

50 M V

100 ,xV

50 ,xV

50 ^

15 h \l

15 M V

25 fxV

10 ^V

10 ,xV

10 . M V

25 /xV

10 ,xV

10 juV

—i— 50 nA

+50 nA*

+50 nA*

+ 50 nA*

+50 nA

+50 nA*

+ 20 nA

+ 50 nA*

+50 nA **

50 nA

150 nA

300 nA

150 nA

50 nA

150 nA

20 nA

150 nA

50 nA

150 nA

300 nA

600 nA

300 nA

100 nA

300 nA

60 nA

300 nA

100 nA

30 nA

30 nA

30 nA

10 nA

10 nA

10 nA

1 nA

5 nA

5 nA

3 nA

3 nA

3 nA

1 nA

. " .

1 nA

1 nA

0.1 nA

0.5 nA

0.5 nA

5 M V

5 /xV

15 ,xV

10 M V

10 M V

10 M V

20 M V

5 /xV

5 /xV

0.5 nA

0.5 nA

1 nA

0.5 nA

0.5 nA

0.5 nA

0.05 nA

0.25 nA

0.25 nA

1 M V

1 M V

2 M V

1 ^

1 fxV

1 M V

10 /xV

1 uV

1 uV

600 pA

60 pA

100 pA

60 pA

60 pA

60 pA

6 pA

30 pA

30 pA

1 ,xV

1 ^

2 /xV

1 /aV

1 ,xV

1 /xV

10 ^V

1 ,xV

1 uV

600 pA

60 pA

100 pA

60 pA

60 pA

60 pA

6 pA

30 pA

30 pA

-i-10 V

+ 10 V

+ 11 V

+ 11 V

+ 11 V

+ 11 V

+ 11 V

+ 11 V

+ 11 V

-t -20 mA

+20 mA

+2.2 mA

+2.2 mA

+2.2 mA

+ 2.2 mA

+2.2 mA

+ 2.2 mA

+ 2.2 mA

500 Q

500 Q

5 kQ

5 kn

5 kn

5 kn

5 kQ

5 kQ

5 kQ

+ 15 V

+ 15 V

+ 15 V

+ 15 V

+ 15 V

+ 15 V

+ 15 V

+ 15 V

+ 15 V

4 mA

4 mA

5.5 mA

5.5 mA

5.5 mA

5.5 mA

5.5 mA

4 mA

4 mA

23 mA

23 mA

7.7 mA

7.7 mA

7.7 mA

7.7 mA

7.7 mA

4 mA

4 mA

4 mA

4 mA

5.5 mA

5.5 mA

5.5 mA

5.5 mA

5.5 mA

4 mA

4 mA

23 mA

23 mA

5.5 mA

5.5 mA

5.5 mA

5.5 mA

5.5 mA

6.2 mA

6.2 mA

— 25 to +85

-25 to +85

— 25 to +85

-25 to +85

-25 to +85

— 25 to +85

-25 to +85

— 25 to +85

— 25 to +85

— 55 to +100

-55 to +100

-55 to +100

-55 to +100

— 55 to +100

-55 to +100

— 55 to +100

-55 to +100

-55 to +100

-62 to +125

-62 to +125

-62 to +125

-62 to +125

-62 to +125

-62 to +125

-62 to +125

-62 to +125

-62 to +125

$135

$95

$49

$60

$75

$64

$98

$60

$80

P45C ■ $133

P45AL ■ $95

PP55AH and P55AH •

P65A ■ $65

PP65CH $79 and

P65AH ■ $69

P75A ■ $98

PP85A1 and P85A1 ■

P85C ■ $80

PP45CL and P45CL ■

are stable wide-band

PP65Q $64 and P65Q1

P65CH «$84 are wide-

are units selected for

have input current off-

versions. $53

$69 have +0.9 mA

band versions

less than 1 mV input

sets and common

P55A • $49

quiescent battery

P65C ■ $80

voltage offset ( — 25°C

mode parameters iden-

drain, +0.5 mA full

to +85°C). $70 and $75

tical to those of PP45C

output.

P85A «$65

$110

EP45ALU A $63

EP55AU ♦ $19

EP65AU A $31

EP65AHU A $35

P75AU ■ $68

EP85AU a $ 3 i

PP45LU $65

PP55AU $15

PP65AU $30

PP65AHU $34

PP75AU $68

PP85AU $25

EP55AHU ♦ $23

EP65QU A $35

PP55AHU $19

PP65QU $34

F*H I L/EJFtlCK.
RESEARCHES

Allied Drive at Route 128, Dedham, Massachusetts 02026

U.S.A-

Q85AH

SP2A

SP65A t

SP65AH t

Differential wideband

Differential

Stabilized

Stabilized

Low voltage offset

Ultra low offset current
Floating input

Wideband

20,000

20,000

lO 2

102

40,000

40,000

2 x 102

2 x 102

80,000

150,000

4x 102

4x102

15,000

10,000 (0°C)

5 x 10*

5 x 10*

15,000

10,000 (65°C)

4x102

4x 102

30 MHz ▼

75 kHz

1.5 MHz

20 MHz

50

3

-25

5

—

_

2.5

0.1 MHz

1.1 kHz

20 kHz

75 kHz

8 V//x-sec

.066 V/m- sec

1.5 V/M-sec

•

5 V/m- sec

+ 11 V

+300 V

+0.1 V

+0.1 V

10 V

15 V

0.5 V

0.5 V

20 , 000:1

Infinite

—

—

2Mnil 3pF

10ioa||500 pF

500Moll 5pF

10i 2 12|| 5 pF

1.3M12II 300pF

1.3Mall 300pF

500MOII 5pF

10i 2 a|| 5 pF

—

—

10 ka & 250 ka Pot.

Built-in

IMa&lOO ka Pot.

IMa&lOO ka Pot.

1 mV

—

20 mV (5 mV typ.)

20 mV (5 mV typ.)

3 mV

6 mV (0° to 65°C)

50 mV (20 mV typ.)

50 mV (20 mV typ.)

50 M V

100 mV

1 mV

1 mV

10 M V

10 mV

1 mV

1 mV

220 nA

+ 1 pA

10 pA

10 pA

220 nA

—

30 pA

30 pA

440 nA

10 pA (0° to 65°C)

100 pA

100 pA

5 nA

0.1 pA

10 pA

10 pA

0.5 nA

0.01 pA

2 pA

2 pA

5 mV

1 mV

6 mV

6 mV

0.25 nA

1 fA

0.1 nA

0.1 nA

1 mV

10 mV p-p

10 mV p-p

10 mV p-p

30 pA

■

—

1 mV

10 mV

1 mV

1 mV

30 pA

500 pA

60 pA

60 pA

+ 11 V

+ 11V

+ 11 V

+ 11 V

+2.2 mA

+ 2.2 mA

+2.2 mA

+2.2 mA

5 ka

5 ka

5 ka

5 ka

+ 15 V

+ 15 V

+ 15 V

+ 15 V

6 mA

8 mA

8 mA

8 mA

6 mA

8 mA

10 mA

10 mA

6 mA

6 mA

7 mA

7 mA

8.2 mA

8.2 mA

7 mA

7 mA

-55 to +125

0 to +65

-25 to +85

— 25 to +85

-25 to +85

— 45 to +85

—45 to +85

-62 to +150

— 55 to + 85

— 55 to +85

— 55 to +85

$161

$180

$180

$189

P85AH $98

P2A $227 is a wire-in
version of SP2A. It has

no provision for a driven
guard SP2B $195 has

20 mA output current
capability. SP102 $295
has +100 V @ 10 mA
output capability.

j P2AU a ▲ $130
SP2AU A A $138
SP2BU a A $145

SP6561

Stabilized

Large output current

SP4561

Stabilized

Wideband

Large output current

5x102

108

10 «

4x108

2 x 10 ®

4x108

2.5 x 102

5x102

10 «

2 xl 0 »

1.5 MHz

100 MHz

3

140

—

14

20 kHz

300 kHz

1.5 V/M-sec

200 V/M-sec

+0.1 V

+0.1 V

0.5 V

0.5 V

1.3 Mall 300pF

1.3 Ma II O.OImF

IMa&lOO ka Pot.

IMa &100 ka Pot.

20 mV (5 i*V typ.)

20 mV (5 mV typ.)

50 mV (20 mV typ.)

50 mV (20 mV typ.)

1 mV

1 mV

1 mV

1 mV

10 pA

10 pA

30 pA

30 pA

100 pA

100 pA

10 pA

10 pA

2 pA

2 pA

6 mV

6 mV

0.1 nA

0.1 nA

10 mV p-p

10 mV p-p

1 mV

1 mV

60 pA

600 pA

+ 10V

+10V

+20 mA

+20 mA

500 a

500 a

+ 15 V

+15 V

8.75 mA

5 mA

28 mA

24.5 mA

8.75 mA

4.5 mA

28.5 mA

24 mA

-25 to +85

— 25 to +85

—45 to +85

-45 to +85

-55 to +85

— 55 to + 85

•$195

$227

CHARACTERISTICS

Typical at +25°C unless otherwise indicated

1. VOLTAGE GAIN (DC open loop)

At +25°C, rated load,.min.

10 ka load.min.

100 ka load,.min.

At -25°C, rated load,.min.

At + 85 C, rated load,.min.

2. RESPONSE (open loop, inverting)

Small signal: Unity gain-bandwith.min.

Gain at 1.0 MHz

Gain at 10 MHz

Large signal: Full output .min.

Rate limit

3. INPUT VOLTAGE RANGE

Voltage range, both inputs

Voltage range, between inputs ....abs. max.
CMRR, DC.min.

4. INPUT IMPEDANCE

Between inputs

Negative input to common

Positive input to common

5. INPUT VOLTAGE OFFSET

Zero adjustment (external)

Vs Temp. ( + 10°C to + 60°C),.max.

Vs Temp. (— 25°C to +85°C),.max.

Vs Time (per day)

Vs Time (V 2 hour)

6 . INPUT CURRENT OFFSET

25°C .max.

Vs Temp. ( + 10°C to +60°C).max.

Vs Temp. ( — 25°C to +85°C).max.

Vs Time (per day)

Vs Time (V 2 hour)

7. INPUT NOISE

(a) Flicker (0.016 to 1.6 Hz)

voltage p-p
current p-p

(b) Broadband (1.6 to 160 Hz)

voltage rms
current rms

(c) Broadband (0.16 to 16 kHz)

voltage rms
current rms

8 . OUTPUT (-25°C to 4 85°C)

Voltage

Current

Load (rated)

9. POWER REQUIREMENTS t

Voltage ,

Current from positive supply: (Quiescent)

(Full Load)

Current from negative supply: (Quiescent)

(Full Load)

10. TEMPERATURE RANGE (degrees Centigrade)
Operating: Rated

Derated specifications .max.

Storage .max.

PRICE (quantity 1-4) Price of “Alternate Forms”
may be slightly different. Prices may change
without notice.

ALTERNATE FORMS

These units belong in the same family as the
prototype because they have nearly equiva¬
lent circuit configurations. They may differ
significantly from the listed types in electri¬
cal or physical characteristics, or applica¬
tions considerations. Philbrick Researches
welcomes your inquiry regarding these and
other modified forms of standard units.

UTILITY GRADE

Where indicated a utility grade equivalent
denoted by the letter U following the model
designation, is available at reduced price.
Utility grade amplifiers have identical per¬
formance with their premium grade equiva¬
lents in the temperature range 0-60 c C.
Storage temperatures below — 55°C and
above +85°C and certified test data are
not available.

LEGEND

M — mega —10 6
k — kilo —10 3
m — milli — 10 -3
fji — micro — 10 6
/ n —nano — 10 9
p — pico — 10 12
f — femto — 10 15

FOOTNOTES

■ A plug-in version in bright-metal case having similar performance. Voltage
offset adjustment built-in.

♦ A plug-in epoxy version having similar performance. Voltage offset
adjustment external.

• A plug-in version in bright-metal case having similar performance. No
built-in voltage offset adjustment.

a A plug-in epoxy version having similar performance
Voltage offset adjustment built-in.

* With specified external current trim resistors installed. P models have built-in
current trim resistors.

** With “Trim I” terminal grounded. Can be trimmed to zero by voltage bias
(±5 V Max.) applied to “Trim I" terminal.

▼ Roll-off network connected externally.

t Specifications shown are for units with mechanical chopper; 6.3 VAC, 50-80 cps
at 80 mA is required. Units with photochopper are available for operation
below +65°C. In addition to 6.3 VAC, 50-80 cps, 1 mA, the photochopper
also requires 115 VAC, 5 mA, at the same frequency and phase.

$ At + 85°C power requirements will be 10% higher than those stated at +25°C. For
maximum power requirements at any temperature add ± 10 %.

a* These utility versions have wider tolerances for voltage offset
vs temperature, and input current, than premium equivalents.

S>SC\

Hot J) 9/iv/w

PHILBRICK (j> RESEARCHES

UTILITY-GRADE

Philbrick Utility-Grade Amplifiers, identified by the
letter “U" following the family number (e.g.PP85AU), are
identical to premium-grade prototypes in circuitry, layout,
manufacturing techniques, and the exclusive use of silicon
transistors and first-grade passive components from leading
U. S. manufacturers.

The substantial price difference between premium and
utility-grade amplifiers is achieved by the following means:

The use of silicon transistors encapsulated in highly
moisture-resistant silicone plastic (Note: not epoxy!)
instead of hermetically-sealed amplifiers.

Use of capacitors which are guaranteed from —55 to
+ 85°C, instead of the —65 to +125°C units normally
used in Premium-Grade products.

All room-temperature tests are carried out with the
thoroughness that has earned Philbrick an enviable
reputation for reliability; complete temperature tests
are run on representative samples of each production
run to confirm compliance with published specifications.

Use of date codes and go-no-go tests instead of serial
numbers and recording of data as normally required for
all premium units (Government Inspection and/or cer¬
tified test results are available, upon request, for
premium units.)

In performance, the Utility-Grade amplifiers (except
those in the P2 Series) are identical to their Premium-Grade
counterparts. As temperature tests are conducted on samples
only, tolerances outside the 10°-60°C range are relaxed as
compared with the corresponding specifications for the
premium amplifier.

Philbrick Utility-Grade amplifiers may be substituted
in virtually all applications for which their Premium-Grade
counterparts are and have been originally recommended.

CURRENT COMPENSATION

Philbrick differential operational amplifier families P35
through P85 contain input stages with matched pairs of
junction transistors in a common emitter configuration.
Emitter current being kept constant, each transistor requires
a "housekeeping" current into its base amounting to emitter
current divided by j3 (current gain). By selecting high-/? tran¬
sistors and low emitter currents, these base currents can be
made as small as 1CH 5 amperes, but they can never be elim¬
inated, and they increase as temperature decreases. If the
base currents of input transistors are not supplied by current
sources within the amplifier, an output voltage error will re¬
sult because this offset current produces a voltage drop
across the feed-back impedance (in an inverter) or the signal
source impedance (in a voltage follower).

The simplest form of base current supply is a resistor
from + B to each base. P45A, P55A, P65A and P85A families
have these built in, while the proper resistance values for
external installation are marked on their PP equivalents.
Although these current trim resistors are inexpensive, they
are most effective within narrow temperature limits and
where high common-mode voltages do not occur. After all, j3,
and with it base current do change with temperature, and a
resistor is a constant current source only as long as the
voltage across it remains constant!

Philbrick Current Compensated Amplifiers, identified by
the letter C following the family number, have built-in base
current sources which closely track current demand over the
entire operating temperature range.

The P35C and P85C series contain a sophisticated
compensating circuit which leaves the outstanding common
mode voltage rejection ratio, the common mode voltage
range, and the input impedances unaffected. An additional
feature of this compensating circuit is a provision for nulling
either input current completely by applying an adjustable
voltage bias (±5 volts maximum) to a terminal provided for
the purpose. The P45C and P65C series contain a simpler
compensating circuit which provides a fivefold decrease in
offset current over the entire temperature range, but also
reduces the common mode rejection ratio, the common
mode voltage range, and the input impedance.

AMPLIFIER TEST CIRCUITS

OPEN LOOP GAIN
& OUTPUT CAPABILITY

DC open loop gain, A, and output capability may be measured
at 20 Hz. Of chopper stabilized amplifiers, only the main ampli¬
fier gain is measured in this manner, overall DC gain being too
high to measure. For SP2A the gain measurement should be
carried out at no more than 3 Hz.

e H

A = 101 ~^ L
e v

VOLTAGE OFFSET

Voltage offset, e 0 , vs. temperature and/or time may be meas¬
ured after the voltage offset central has been adjusted for zero
output at room temperature. For best accuracy allow the
amplifier to warm up for 30 minutes before adjusting to zero.

INPUT CURRENT

Input currents should be measured after the voltage offset has
been nulled. If amplifiers have too little input current to be
measured in this manner (SP2A, P25A, Q25AH, chopper
stabilized amplifier) the 1M12 resistors should be omitted, and
the output change timed, i = C de/dt or 1 pA = 10 mV/sec.

TRACK

+e v
1 Mil

'+

~ e v

1MO.

R^ioon r 2 =iook

Alabama

Huntsville

205-536-8393

Illinois

Chicago

312-676-1100

New York

Buffalo

716-835-6186

Texas

Dallas

214-526-8316

Arizona

Phoenix

602-265-3629

312-676-1101

Syracuse

315-446-0220

Houston

713-781-1441

California

Los Angeles

213-937-0780

Indiana

Indianapolis

317-356-4249

Valley Stream

516-561-7791

Utah

Salt Lake City

801-466-4924

Mountain View

415-969-9020

Louisiana

New Orleans

504-242-5575

North Carolina

Winston-Salem

919-725-5384

Virginia

Alexandria

703-836-1800

San Diego

714-222-1121

Maryland

Baltimore

301-727-1999

919-725-5385

Newport News

703-245-8272

Colorado

Denver

303-733-3701

Massachusetts

Wakefield

617-245-5100

Ohio

Dayton

513-298-9964

Washington

Seattle

206-723-3320

Connecticut

Hartford

203-233-5503

Michigan

Detroit

313-838-7324

Westlake

216-871-8000

New York (Export) New York

212-246-2133

Greenwich

203-661-5140

Minnesota

Minneapolis

612-545-4481

Oklahoma

Tulsa

918-627-6199

Florida

Ft. Lauderdale

305-564-8000

Missouri

St. Louis

314-831-0015

Pennsylvania

Philadelphia

215-277-0559

Canada

Quebec — Montreal

514-482-9750

Ft. Walton Beach

904-243-6424

New Mexico

Albuquerque

505-268-3941

Pittsburgh

412-371-1231

Ontario — Toronto

416-789-4325

Orlando 305-425-5505

Georgia Atlanta 404-939-1674